One of the most challenging intake systems to design and manufacture to date and our showcase product.
Specifications
100% Pre-Preg Modular One-Piece Carbon Plenum with removable side inlet, lid and velocity stacks
Optional Side Inlets for fitment to MAF's or larger Infinity Design Intake
Lower Air Filter Housings with integrated air feed fitting directly to oem air feeds
Bespoke large surface area Air Filters
Full Sealed Design allowing OEM levels of inlet air temperature
The BMW E60 M5 CSL has always captivated the hearts of S85 owners with the showcase being the single piece carbon plenum with larger side inlets running AlphaN software.
It was never available as a part to purchase.
We did not want to make just make another carbon plenum which replaces the OEM for noise alone.
Like the rest of our range we wanted to give the enthusiasts something very special for what is essentially one of the last of the truly great naturally aspirated engines.
Infinity Design therefore went the extra distance to give the enthusiast S85 owners something special.
The 100% pre preg carbon fibre plenum was designed in CAD software using accurate 3D scans of the engine bay without the OEM plenum in place, 3D scans of both of the individual OEM plenums and then combined together to make a singular larger volume system.
The induction sound is beyond what has been achieved by the market.
Mutiple reports of the intial pre production batch have shown more usable torque and improved 60-130mph times as well as improved power on dyno testing.
Under bonnet looks are sensational.
At the core of the design is the modularity. This is key both to the functionality, how the system is fitted, the multiple upgrade paths and also a lower price. No other product throughout the BMW aftermarket exists which is this complex and at the same time gives so many options and advantages.
There are 4 main components:
Main Plenum
Throttle body bosses
Velocity stacks
Side inlets
Lid
Fitment
The fundamental problem with one piece plenums is that they are very difficult to fit as the throttle bodies are at a 120 degrees angle to one another unlike the S65 engine where they are at a 180 degree angle and the plenum fits directly downwards on top of them. A solid one-piece plenum causes major issues when attempting to fit with the rubber boots not seating correctly onto the adaptors on the plenum which lead to major air leaks. The system also requires considerable force to seat correctly.
The Infinity Design plenum allows the throttle body bosses to first be attached to the rubber boots, the main plenum is placed onto the adapters, the velocity stacks are then attached, side inlets installed and lid installed leading to a leak free and simple process.
By keeping the main frame, throttle body bosses, velocity stacks, side inlets and lid separate a logical and simple process can be taken to fit the system giving no risk of overlapping of the throttle body boots which leads to air leaks and having to force the plenum into position
Upgradability
By allowing all of the parts to be separate it allows the end user to change the velocity stacks to shorter types to give a higher rpm biased power delivery.
The side inlets can be changed from the OEM style to the CSL Style which give a significantly larger opening leading to a large volume high flow intake system.
Resistance to Failure
It has been long known that carbon plenums suffer from internal failures. The most common issue is the velocity stacks break away as they are often glued. Over time the adhesive weakens with heat cycles and vibrations. Not only is the entire plenum wasted but can cause major catastrophic engine damage as the broken carbon shards entire into the combustion chamber.
The Infinity Design system has one piece velocity stacks which are bolted through the plenum into the throttle body bosses. There is no chance of failure.
Lower Cost
Since all of the parts of the plenum are individually manufactured and supplied there is no expense of assembly which poses a significant cost in carbon parts. Jigs are required for exact placement of parts with adhesive, drying times and cleaning required which all add time to the manufacturing process leading to a higher overall price.
Given how complex our system is, the cost is very reasonable.
The velocity stacks were lightly redesigned with a larger and longer opening with them all facing the significantly larger side openings rather than away from the path of the air.
Installation
AlphaN tuning required.
Plan 2-3 hours for installation.
Availability
Available Worldwide.
An intake system which performs both on the dyno and the real world with a realistic gain of 12hp at high engine speeds where the OEM intake becomes restrictive (see dyno graph).
A complete product which performs consistently due to it's sealed high flow design keeping intake air temperatures at ambient.
Fits directly to OEM lower and frontal intake.
How the Increased Power and Throttle Response is achieved
The bespoke large surface area, high flow air filter alters the direction of the airflow towards the outer walls of the velocity stack shaped intake tube.
This therefore creates a smoother and less restrictive air flow allowing which in turn reduces the load on the engine and allows for more ambient air to enter the engine.
The overall effect is a vastly improved driving experience with faster throttle response, a sophisticated V10 race car like induction sound and more power.
The faster throttle response will naturally give the impression of more quickly available torque at lower engine speeds also.
Why a Sealed Intake is Important on the S85 V10 Engine
The majority of intake systems on the market are open designs which allow high temperature engine bay air to enter the intake system.
This has has a two tier negative effect:
The most understood effect is that the hotter engine bay air is less dense in oxygen which naturally produces less power.
The second effect is less well understood. The ECU detects the higher temperature air through the intake air temperature sensor located inside the MAF sensor. The compensation tables will reduce ignition timing which has a drastic effect on power output. In the case of the MSS85 ECU running the S85 V10 engine, not only is ignition timing retarded but fueling is also increased which further reduces power.
The Infinity Design lower air filter / Inlet Air Ducts housings have been meticulously designed to allow for maximum air flow and fit directly to the large factory air inlet ducts creating a perfect seal which keeps the intake air temperatures at their lowest point at all times and thus giving the best possible performance.
Installation
No tuning required.
Plan 30 mins for installation.
Availability
Available Worldwide.
The Infinity Design Headers were designed through extensive research and hard work to create the perfect system.
The unique design incorporates equal length primaries and an F1 merge collector. Coupled with precision machined slip joints to ensure a leak free system. CNC machined head flanges with a 65mm outlet allowing the system to mate to the OEM section 1 / CAT section and any system designed to fit the original headers. Using large bore 42mm pipework with a 1.5mm wall thickness this system represents a significant upgrade to the stock system even with the CAT's removed.
The entire system is made from T304 stainless steel and is purged welded TIG.
Why Equal Length?
As with many headers on the market many enthusiasts have seen the glorious V10 sound track changes with unequal length primary tubes. By keeping the primary tubes close to equal the sound track is retained through the entire rpm range with the major added benefit of excellent throttle response and partial load and low rpm torque.
Will fit BMW E60 M5, E63 M6, E64 M6 and E61 Touring
Availability
Available Worldwide.
BMW E60 M5 / E63 M6 ECU Tuning
BMW S85B50 - +20-25 hp / 20 lb.ft
An ECU tune which has been offered for over a decade with cars running the tune across the world flawlessly and delivering unrivalled drivability and performance.
Developed by head of development ,Salman Janjua, the previous owner of Evolve, on multiple company and personal owned cars both on road and dyno with a multitude of options.
Available to run both with MAF and without in AlphaN mode.
Independent dyno graph of E60 M5 with Primary DeCAT
The BMW S85 engine responds incredibly well to tuning with changes made to ignition, vanos and torque maps. A realistic and repeatable peak 30hp @ 7800rpm gain with 20lb.ft @ 6250rpm torque is achieved with a peak gain of 35hp @ 8000rpm.
Power gains are throughout the rpm range accompanied by sharper throttle response and a smoother overall power delivery.
Tuning is supplied remotely and supplied with an OBDII cable with software.
Options available:
- AlphaN and MAF Mode
- Raised RPM Limit to 8600rpm
- Top Speed Limit Removal
- Cold Start Delete (CAT Warm up Delete)
- Power Calibrations with changes made to ignition, fuel, torque and vanos maps
- Stage 2 Calibration available for cars with long tube headers and running CATless
- Custom Tuning for cars with superchargers, camshafts and cylinder head modifications (please enquire for price)
Installation
Laptop Required
Plan for 30 Mins Read Time and 5 Mins Write time
Availability
Available Worldwide.